
Verbo regular: charge - charged - charged
Forma simple | Forma con V-ing | 
| I could charge you could charge she could charge we could charge you could charge they could charge  | I could be charging you could be charging she could be charging we could be charging you could be charging they could be charging  | 
Perfecto | Perfecto con V-ing | 
| I could have charged you could have charged she could have charged we could have charged you could have charged they could have charged  | I could have been charging you could have been charging she could have been charging we could have been charging you could have been charging they could have been charging  | 
Forma simple | Forma con V-ing | 
| I couldn't charge you couldn't charge she couldn't charge we couldn't charge you couldn't charge they couldn't charge  | I couldn't be charging you couldn't be charging she couldn't be charging we couldn't be charging you couldn't be charging they couldn't be charging  | 
Perfecto | Perfecto con V-ing | 
| I couldn't have charged you couldn't have charged she couldn't have charged we couldn't have charged you couldn't have charged they couldn't have charged  | I couldn't have been charging you couldn't have been charging she couldn't have been charging we couldn't have been charging you couldn't have been charging they couldn't have been charging  | 
Forma simple | Forma con V-ing | 
| could I charge? could you charge? could she charge? could we charge? could you charge? could they charge?  | could I be charging? could you be charging? could she be charging? could we be charging? could you be charging? could they be charging?  | 
Perfecto | Perfecto con V-ing | 
| could I have charged? could you have charged? could she have charged? could we have charged? could you have charged? could they have charged?  | could I have been charging? could you have been charging? could she have been charging? could we have been charging? could you have been charging? could they have been charging?  | 
Forma simple | Forma con V-ing | 
| couldn't I charge? couldn't you charge? couldn't she charge? couldn't we charge? couldn't you charge? couldn't they charge?  | couldn't I be charging? couldn't you be charging? couldn't she be charging? couldn't we be charging? couldn't you be charging? couldn't they be charging?  | 
Perfecto | Perfecto con V-ing | 
| couldn't I have charged? couldn't you have charged? couldn't she have charged? couldn't we have charged? couldn't you have charged? couldn't they have charged?  | couldn't I have been charging? couldn't you have been charging? couldn't she have been charging? couldn't we have been charging? couldn't you have been charging? couldn't they have been charging?  |